Mixing apparatus



April 9- A c. L. RIPLEY 1,707,669

IIIXING APPARATUS Filed April 13, 1928 Patented Apr. 2, 1929.

; U NlTE'D STATE-S PATENT ol-rlce.

CHARLES L. RIPLE'Y, or 'ronnno, oHIo, ASSIGNOB or ONE-mam 'r'o LEO I.filthy, OFTOLEDO, 0310.

Murine arrm'rus.

Application filed April 13,1923. Serial no. 209,622.

This invention relatesto mixing apparatus, but more particularly tomotor driven mixers of the type commonly used at soda fountains andelsewhere for mlxing drinks, and an object of this invention is toprovide a simple and efiicient mixing apparatus in which the motor maybe energized before the mlxmg element is clutched for operation, therebyto relieve the strain on the motor, and enhance the life of the parts.Another object is to enable a relatively large sized motorto beemployed, and to so arrange the parts that a plurality of mixingelements may be selectively driven from a single motor; Other objectsare to provide a new and improved mixing apparatus having the uniquefeatures of construction, arrangement and operation hereinafter describeThe invention is shown by way of illustration in the accompanyingdrawing,in which:

Fig. 1 is a side elevation partly in section of a mixing apparatus;

Fig. 2 is a transverse section on the line 22 of Fig. 1 showing oneofthe driving mechanisms and the switch-operatingmeans .ofFig.1;and f Fig.3 is a section on the line 3-3 of Fig. 1 showing the manner ofsupporting thebottom of the receptacle. 7 v V V The illustratedembodiment of. theinvention comprises a mixing apparatus consisting of astandard having a base 1 and an upright support 2. Mounted on the upperend portion of the support 2 is an electric motor 3 having its axis.horizontally disposed. Extending outwardly from the motor 3 andconnected to be driven thereby, is a horizontal shaft 4-, the outer endof which has bearing in a bracket 5, rising from. horizontal supportingarm 6 suitably secured to the up-' right 2.

Mounted on the horizontal shaft 4 atspaced intervals are driving discs 7having a concave surface 8. The discs 7 have a pin andslot connection 9with the shaft 4 so as to permit limited sliding movements of the discaxially of the shaft, and the discs are yieldingly pressed in adirection away. from the motor by coiled springs 10, one end of whichabuts against the discs 7, and the opposite end bears against a collar11'.

Supported in sleeve bearings 12 depending from the horizontal arm 6, arevertically disposed mixing shafts 13 having, their upper ends extendingabove the support 6, and on which are mounted friction Wheelsi14. As

the friction wheel 14 is positioned inwardly of the concave surface 8 ofthe respective driving disc and free from engagement therewith. In thenormal positionfof the parts the motor driven shaft 4 is free to rotatewithout imparting movement to the vertical shafts 13. v p a E ach shaft13 is axially movable in its sleeve bearing 12, and when a shaft 13 ismoved downwardly, its friction wheel 14 is moved into engagementwiththeperipheral portion of the associated-driving disc 7, therey to impartrotary movements to the vertical shaft 13. In order to effect such axialmovement of the shafts 13 an actuating lever 15 is provided for eachsiaft 13. The lever 15 is pivotally mounted intermediate its ends on abracket 16 rising from the horizontal support 6. One endofthe lever 15is provided with a fork 17 which straddles the shaft 13 in thespaceintermediate the collar 18 and the friction wheel 14.

Movement is imparted to the lever 15by a a vertically disposed rod 19connectedtothe outerend of the lever lband guided by a bracket .20secured to the 511 port 6., Se-

I 519 is arecepmole-engaging member 21 which is arcuately friction wheel14 is moved into frictional clutching engagement with the peripheralportion of the associated driving disc 7 7 Prior to engagement of thefriction wheel 14 with the driving disc, the electric motor 3 isenergized so that the motor may reach approximately its maximum speedbefore a friction wheel is moved into engagement with its associateddriving disc. For this purpose an arm 25 is mounted for. movement withthe lever 15, and is adapted to engage the spring arm 26 of a switch 27.In the movement of the lever the arm moves the contact points of theswitch 27 into engagement to energize the motor 3 prlor tothe movementof the friction wheel 14 into operative engagement with the associateddriving disc 7 so that the motor is'energized to rotate the discs 7prior to the engagement of a friction wheel with its disc.

' Upon releasing the receptacle R from'the engaging member 21, a coiledspring 28 serves to swing the lever 15 in a counterclockwise direction(Fig. 2), thereby to'successively disengage the friction wheel 14: fromthe disc 7 and then release the arm 25 to enable the spring arm 26 ofthe switch 27 to separate the contact points, thereby to de-energize themotor 3. The parts are maintained in this position until the receptacleIt is again moved into position.

For supporting the bottom of the receptacle R, posts 29 rise from thebase 1, and are provided with a button 30 shaped to receive the lowerbeaded edge 31 of the receptacle. In mounting the receptacle for mixingthe upper rim of the receptacle is brought into engagement with theover-hanging lip 22,

and the receptacle-engaging member 21 is forced upwardly until the lowerbeaded edge 31 of the receptacle can be mounted on the button 30 to holdthe same in'position. As

shown,-the posts 29 are substantially in align-.

ment with the receptacle-engaging members 21.

While I have shown and described a construction which is the best formknown tome at the present time, it is to be understood that numerouschanges in-details of construction,

arrangement and operation may be effected without departing from thespirit of the invention, especially as defined in the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. A mixing apparatus comprising, in com:

bination, an electric'motor, a horizontal shaft connected to be drivenby said motor, a drivand means movable with saidlever for closing saidswitch before said wheel is moved into engagement with said disc bysaidlever.

2. A mixing apparatus comprising a standard, an electric motor mountedon the upper portion of said standard, a horizontal shaft connected tobe drivenby said motor, concave driving members on said shaft,vertically depending inixing shafts having friction wheels therein forengagement respectively with said driving discs, lever means for eachshaft pivoted intermediate its ends and engageable with the respectivevertical shaft for imparting axial movements thereto for moving saidwheel into and out of driving engagement with the discs, an actuatingmember for each lever, a switch controlling said motor, and meansassociated respectively with said lever means for closing said switchprior to the operative engagement of the respective friction wheel withits associated driving disc.

In testimony whereof I have hereunto signed my name to thisspecification.

CHARLES L. RIPLEY,

